Introduces the way in which the sun's relationship to the earth is responsible for seasonal changes.

Explains what the Greenhouse Effect is and what can be done to combat it.

"Stegosaurus had spikes along its back. Triceratops had long, sharp horns. Tyrannosaurus rex was enormous. Millions and millions of years before the first people lived, these fascinating creatures ruled the Earth. To find out where they came from, you have to look way back in time...3.5 billion years ago! Come explore the biggest mystery of all: Where did dinosaurs come from? Read and find out!"--Amazon.com.

Describes how Air works and includes instructions on different way you can use air

Introduces the solar system and its nine planets. Includes directions for making two models, one showing relative sizes of the planets and the other their relative distances from the sun.

Describes, using evidence found in fossil layers, how one-cell organisms evolved into complex plants and animals.

Describes human growth and how the different parts of the body change as it grows.

Describes the behavior and physical characteristics of the birds that live in a sub-zero climate, swim instead of fly, and send their chicks to "kindergarten."

Explains in simple terms what happens during a solar eclipse.

Describes the characteristics of the redwood trees.